Thomas Reinke, M.S. Student, Stephen F. Austin State University
Dr. Warren Conway
Dr. David Haukos
Migratory Bird Office, Region 2, U.S. Fish and Wildlife Service
National Wildlife Refuges, Region 2, U.S. Fish and Wildlife Service
Stephen F. Austin State University
Texas Chenier Plain NWR Complex
Dr. Dan Collins
Location: Anahuac National Wildlife Refuge
Waterbirds are being sampled for lead exposure in coastal marsh
Completion: May 2013
Status: Summer 2012 was the first year of sampling waterbirds on the Texas Chenier Plain National Wildlife Refuge Complex
(1) Measure lead exposure on black-necked stilts.
(2) Model the population effect of lead exposure on black-necked stilts.
(3) Determine effect of coastal marsh management practices on population demography of black-necked stilts.
Progress and Results:
The black-necked stilt has been studied extensively in the western United States,
but its habitat requirements and breeding ecology are poorly delineated elsewhere.
In western North America, black-necked stilts exist in dense populations, often
clustered around salt evaporation ponds and managed wetlands, while black-necked
stilts in the Southeast are putatively more broadly distributed in coastal marsh
habitats. These regional habitat differences may promote variation in
metapopulation structure, nest-site selection, reproductive success, and habitat
and space use, none of which are well described in coastal Texas. Moreover,
historic waterfowl harvest sites along the Texas coast have extensive lead
deposition from spent shot. Although lead shot ingestion has been documented in
black-necked stilts no data exist on blood lead concentrations or potential effects
on survival, nest success, and other vital. This research has been designed to
quantify black-necked stilt blood lead levels, habitat use, nest-site selection,
and nest success on the upper Texas coast.
Riecke, T.V., W. Conway, and D.A. Haukos. 2012. Nest success and nest site
selection of black-necked stilts on the Texas Chenier Plain National Wildlife
Refuge Complex. 48th Annual Meeting, Texas Chapter of The Wildlife Society, Fort Worth, Texas.